Reservoir filling aid for a medical pump

ABSTRACT

A reservoir filling aid for a reservoir of a medical infusion pump is disclosed. The reservoir filling aid comprises a main body for supporting the reservoir during the filling of the reservoir with a medical serum and a supply vial adapter end positioned at a first end of the main body. The supply vial adapter end comprises a plurality of flexible tabs extending from the supply vial adapter end for interfacing with a supply vial containing the medical serum and a shaped ring for housing the plurality of flexible tabs and the supply vial while in a closed configuration to establish a fluid connection between the supply vial and the reservoir. The interior of the supply vial adapter end may also have a spiral track for additional security. A removable adapter may be fitted on the top of small supply vials.

BACKGROUND

The present disclosure generally relates to a reservoir filling aid fora medical pump reservoir and, in particular, relates to a needle-safetransfer reservoir filling aid for a medical pump reservoir with asupply vial adapter.

In general, a medical pump can be a component of a medical device thatis typically used for the administration of a medical serum, such as,for example, chemotherapy drugs in the treatment of cancers or insulinin the treatment of diabetes mellitus. The use of an insulin medicalpump is also known as continuous subcutaneous insulin infusion therapy.

In the case of diabetes mellitus treatment, an insulin delivery medicalpump can be an attractive alternative to multiple daily injections ofinsulin by insulin syringe or an insulin pen that typically associatedwith a more traditionally diabetes regimen. The insulin delivery medicalpump can result in an intensive insulin therapy when it is used inconjunction with the more traditional blood glucose monitoring andcarbohydrate counting.

Typically, to use a medical pump, a reservoir is used to store a medicalserum, such as, for example, insulin, chemotherapy drugs, or any othersuitable medical serum. It is typically recommended that a reservoir ofthe medical pump first be filled with the medical serum. Some medicalpumps can use reservoirs that are prefilled with the medical serum. Inthese medical pumps, the reservoir can be taken out of the medical pumpand replaced with a new prefilled reservoir when empty. However, it morecommon for medical pumps to have reservoirs that are manually filled bythe user with the medical serum prescribed to the user.

However, being able to hold both the reservoir and the medical serumvial at the same time in order to fill the reservoir can be a seriousproblem for the very young, the very old, as well as for persons who maybe blind or who may have limited dexterity. All of which can be commonaliments of diabetics and others who may require a medical infusion pumpdevice.

Therefore, there is a need for an inexpensive, easy-to-use reservoirfilling aid for a medical infusion pump device that can facilitate theloading of medical infusion pump reservoirs with medical serum.

SUMMARY

According to the present disclosure, a reservoir filling aid for areservoir of a medical infusion pump is disclosed. The reservoir fillingaid can comprise a main body for supporting the reservoir of the medicalinfusion pump during the filling of the reservoir. A supply vial adapterend can be positioned at a first end of the main body. The supply vialadapter end can comprise a plurality of flexible tabs for interfacingand engaging a supply vial containing a medical serum and a shaped ringfor securely housing the plurality of flexible tabs and the supply vialwhile the supply vial adapter end is in the closed configuration Whilein the closed configuration, the reservoir filling aid can secure thesupply vial and reservoir onto a needle to facilitate the filling of thereservoir of the medical serum.

In accordance with one embodiment of the present disclosure, thereservoir filling aid further comprises a plunger body adjacent the mainbody for supporting and controlling a plunger during the filling of thereservoir.

In accordance with another embodiment of the present disclosure, thesupply vial adapter end and the main body of the reservoir filling aidcan be threaded to further secure the supply vial to the reservoir.

In accordance with yet another embodiment of the present disclosure, anadditional adapter can be used with the reservoir filling aid in orderto facilitate the use of different volume supply vials in filling thereservoir.

Accordingly, it is a feature of the embodiments of the presentdisclosure to provide an inexpensive, easy-to-use reservoir filling aidto facilitate the filling of a reservoir of a medical infusion pump withmedical serum. Other features of the embodiments of the presentdisclosure will be apparent in light of the description of thedisclosure embodied herein.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

The following detailed description of specific embodiments of thepresent disclosure can be best understood when read in conjunction withthe following drawings, where like structure is indicated with likereference numerals and in which:

FIGS. 1A-B illustrate two views of a typical medical infusion pumpaccording to an embodiment of the present disclosure.

FIG. 2A illustrates a typical reservoir according to an embodiment ofthe present disclosure.

FIG. 2B illustrates a typical reservoir with a plunger attachedaccording to an embodiment of the present disclosure.

FIG. 3 illustrates a typical 10 ml supply vial according to anembodiment of the present disclosure.

FIG. 4 illustrates a typical reservoir filling aid for a medicalinfusion pump according to an embodiment of the present disclosure.

FIGS. 5 A-B illustrate an isometric view of a supply vial adapter end ofa reservoir filling aid for a medical infusion pump showing a pluralityof flexible tabs according to an embodiment of the present disclosure.

FIGS. 6 A-B illustrate an isometric view of a threaded supply vialadapter end of a reservoir filling aid for a medical infusion pumpaccording to another embodiment of the present disclosure.

FIGS. 7A-B illustrate adapters that fits onto a supply vial to adapt thesupply vial for use with the reservoir filling aid for a medicalinfusion pump according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

In the following detailed description of the embodiments, reference ismade to the accompanying drawings that form a part hereof, and in whichare shown by way of illustration, and not by way of limitation, specificembodiments in which the disclosure may be practiced. It is to beunderstood that other embodiments may be utilized and that logical,mechanical and electrical changes may be made without departing from thespirit and scope of the present disclosure.

Referring initially to FIG. 1, a typical medical infusion pump 10 forthe administration of a medical serum, such as, for example, insulin orchemotherapy drugs is illustrated. The medical serum can be administeredby the medical infusion pump 10 subcutaneously, intravenously, or by anyother suitable method known in the art. In one exemplary embodiment, thehousing 15 of the medical infusion pump 10 can include the mechanicalpump 15 itself as well as pump controls, a processing module, batteries,and a reservoir 20 for storing the medical serum. The reservoir 20 canreside within the medical infusion pump 10. A disposable infusion set 30can connect to the medical infusion pump housing 15. The disposableinfusion set 30 can include a cannula 35 for subcutaneous insertion(i.e., under the skin) into the user and a tubing system 37 to interfacethe medical serum reservoir 20 to the cannula 35. The medical infusionpump 10 can pump the medical serum from the reservoir 20 through thetubing system 37 into the user via the cannula 35.

In general, the medical infusion pump 10 can typically be prepared foruse by a user by opening a new and sterile empty medical infusion pumpreservoir 20 such as the exemplary reservoir 20 illustrated in FIG. 2A.A plunger 50 can be attached to a first end 40 of the reservoir 20 asillustrated in FIG. 2B and as is known in the art. The plunger 50 can bewithdrawn, i.e., pulled away from the first end 40 of the reservoir 20.A needle 55 can be attached to a second end 45 of the reservoir 20,opposite the first end 40, as is known in the art. The needle 55 canthen be inserted into the top of a typical supply vial 300 (see FIG. 3)of medical serum. Air can be injected from the reservoir 20 into thesupply vial 300 via the needle 55 by pushing forward on the plunger 50,towards the first end 40 of the reservoir 20 and the supply vial 300, inorder to prevent a vacuum from forming in the supply vial 300 as themedical serum is withdrawn from the supply vial 300. The medical serumcan then be drawn into the reservoir 20 by pulling back on the plunger50, away from the first end 40 of the reservoir 20 and the supply vial300. After the reservoir 20 is filled, the needle 55 can then be removedfrom both the second end 45 of the reservoir 20 and the supply vial 300.Any air bubbles can be removed from the reservoir 20 by slowing pushingthe plunger 55 towards the first end 40 of the reservoir 20. The plunger55 can then be removed from the reservoir 20.

In one exemplary embodiment, the reservoir 20 can then be attached tothe infusion set tubing 37 of the medical infusion pump 10. Thisassembly of the reservoir 20 and infusing set tubing 37 can then beinstalled into the medical infusion pump 10. In another exemplaryembodiment, the reservoir 20 can first be installed into the medicalinfusion pump 10 and then the infusion set tubing can be attached toreservoir 20. The tubing 37 can then be primed (i.e., medical serum andany air bubbles are pushed through the tubing 37) by the medicalinfusion pump 10. This procedure is typically performed with the medicalinfusion pump 10 disconnected from the body of the user to preventaccidental medical serum delivery. In one exemplary embodiment, themedical infusion pump 10 and infusion set tubing 37 can then be attachedto the body of the user and the cannula 35 can be inserted into thesubcutaneous tissue of the user. Finally, the cannula 35 can be primedas if a new medical infusion pump 10 infusion set had been inserted.

FIG. 4 illustrates a reservoir filling aid 100 that can assist the userin the filling of the reservoir 20 according to an exemplary embodiment.The reservoir filling aid 100 can comprise a main body portion 120 and aplunger body portion 125. The reservoir filling aid 100 can have asupply vial adapter end 110 at a first end 130 of the main body 120. Thesupply vial adapter end 110 can securely engage a supply vial 300 ofmedical serum, such as the supply vial 300 illustrated in FIG. 3. In oneexemplary embodiment, the supply vial 300 can be a 10 ml bottle such asthe supply vial 300 illustrated in FIG. 3.

However, any suitable volume supply vial 300 known in the art can beused. In one exemplary embodiment, the supply vial 300 may can contain,for example, insulin, chemotherapy drugs, or any other suitable medicalserum that can be used in a medical infusion pump system. Typically, theneck 310 of the supply vial 300 has a indentation 320 around thecircumference of the supply vial 300 as illustrated in FIG. 3.

Turning to FIGS. 5A-B, in one exemplary embodiment, the supply vial 300can interface with the reservoir filling aid 100 by a needle 510 housedwithin the supply vial adapter end 110. This interface can establish afluid connection between the supply vial 300 and the reservoir 20 inorder to transfer the medical serum from the supply vial 300 into thereservoir 20. However, any other suitable method of interface known inthe art may be used. Turning back to FIG. 4, in one exemplaryembodiment, the reservoir 20 can be placed horizontally in the main body120 of reservoir filling aid 100 with the second, or needle, end 45 ofthe reservoir 20 adjacent to and interfacing with the supply vialadapter end 110 of the reservoir filling aid 100. In one exemplaryembodiment, the needle end 45 of the reservoir 20 can interface with thereservoir filling aid 100 by the needle 510 (see FIGS. 5A-B) housedwithin the supply vial adapter end 110. However, any suitable method ofinterface known in the art can be used. In a further exemplaryembodiment, the supply vial adapter end 110 can have a plurality offlexible tabs 500 to assist in the secure engagement of the supply vial300 to the reservoir filling aid 100 as illustrated in FIGS. 5A-B whichwill be discussed more fully below.

While the reservoir 20 is placed in the reservoir filling aid 100, aplunger 55, or pull rod, can be attached to the first end 40 ofreservoir 20 as is known in the art. In one exemplary embodiment, as theplunger 55 is pulled away from the first end 40 of the reservoir 20, themedical serum in the supply vial 300 can be pull from the supply vial300 into the reservoir 20 via the needle 510, thereby, filling thereservoir 20 with the medical serum. The plunger 55 of the reservoir 20can reside along the plunger body 125 of the reservoir filling aid 100.Having the plunger 55 supported by the plunger body 125 can provideextra control over the movement of the plunger 55 during the fillingprocess. In one exemplary embodiment, the distal end of the plunger 55can fit into a slot 127 at plunger body end 129 of the reservoir fillingaid 100 for additional control of the filling process. Thus, in oneexemplary embodiment, a user can be able fill the reservoir 20 using onehand. In addition, by guiding the plunger 55 of the reservoir 20 alongthe plunger body 125, the reservoir filling aid 100 can also assist inrefilling the reservoir 20 by helping to prevent overfilling andspilling of the medical serum by the additional control of the plunger.Further, the reservoir filling aid 100, by providing the guidance of theplunger 55 along the length of the plunger body 125, can help remove airbubbles in the reservoir 20. Therefore, the reservoir filling aid 100can provide much needed assistance to those users who have limiteddexterity.

Turning to FIG. 5A, an isometric view of the supply vial adapter end 110of the reservoir filling aid 100 is illustrated. From this view, theplurality of flexible tabs 500 extending from the supply vial adapterend 110 can be seen. The plurality of flexible tabs 500 can be comprisedof plastic, rubber, or any other suitable flexible material known in theart. In one embodiment, the plurality of flexible tabs 500 can bepositioned equidistance along the circumference of supply vial adapterend 110. In another embodiment, the plurality of flexible tabs 500 canbe irregularly positioned around the circumference of the supply vialadapter end 110. The plurality of flexible tabs 500 can comprise anynumber of flexible tabs 500. In one exemplary embodiment, the pluralitycan comprise three flexible tabs 500 positioned equidistance apart fromeach other along the circumference of the supply vial adapter end 110.However, the plurality of flexible tabs 500 may comprise more or lessflexible tabs 500 as needed. In one exemplary embodiment, each of theindividual flexible tab 500 of the plurality of flexible tabs 500 canhave a flange 540 protruding from the distal end 530 of the each of theflexible tabs 500 towards the center of the reservoir filling aid 100.In one embodiment, the flange 540 may be rounded. However, any othersuitably shaped flange 540 is possible.

In one exemplary embodiment, the plurality of flexible tabs 500 caninitially be positioned to be in a receiving configuration asillustrated in FIG. 5A. In this configuration, the plurality of flexibletabs 500 can extend from the supply vial adapter end 110 at an angle α.In one exemplary embodiment, the angle α can be from approximately 10°to approximately 30°. However, other angles α can be envisioned withoutdeviating from the spirit of the present disclosure. In an exemplaryembodiment, when in the receiving configuration, the circumference ofthe distal ends 530 of the plurality of flexible tabs 500 of the supplyvial adapter end 110 can be greater than the circumference of the top325 of the supply vial 300. Thereby, in the receiving configuration, thereservoir filling aid 100 can be incapable of securing a supply vial 300(see FIG. 3) onto the needle 510 housed with the supply vial adapter end110 of the reservoir filling aid 100. In addition, having the pluralityof flexible tabs 500 in the receiving configuration can provide additionprotection to the user from the needle 510 housed with the supply vialadapter end 110, thereby, helping to prevent accidental sticks of theneedle 510.

Alternatively, in the closed configuration, the typical supply vial 300can be forced into the supply vial adapter end 110 by sliding togetherthe typical supply vial 300 and the plurality of flexible tabs 500 intoa shaped ring 520 at the end of the supply vial adapter end 110. In oneexemplary embodiment, the sliding motion can force the rounded flanges540 of the plurality of the flexible tabs 500 to close around theindentation 320 of the neck 310 of the typical supply vial 300 in orderto secure the supply vial 300 to the reservoir filling aid 100. Inaddition, in one embodiment, the sliding motion can force the supplyvial 300 onto the needle 510 housed within the reservoir filling aid 100to establish a fluid connection between the supply vial 300 and thereservoir 20. The plurality of the flexible tabs 300 in the closedconfiguration is illustrated in FIG. 5B. The indentation 320 of thesupply vial 300 can support the flexible tabs 500 in this closedconfiguration in order to support and retain the supply vial 300. Inother words, the supply vial adapter end 110 of the reservoir fillingaid 100 can use a sliding motion to close the plurality of flexible tabs500 around the indentation 320 of the neck 310 of a supply vial 300 andinto the shaped ring 520 of the reservoir filling aid 100. The slidingmotion can then securely force the supply vial 300 onto the needle 510of the reservoir filling aid 100 establishing a fluid connection betweenthe supply vial 300 and the reservoir 20, thereby the reservoir fillingaid 100 can secure and support a needle connection between supply vial300, the reservoir filling aid 100 and the reservoir 20 itself.

Once the reservoir 20 is filled with the desired amount of medicalserum, the supply vial 300 can be slid out of the supply vial adapterend 110 of the reservoir filling aid 100 by simply pulling on the supplyvial 300. As the supply vial 300 is slid out, the plurality of flexibletabs 500 can move from the closed position to the receiving positionand, thereby, the plurality of flexible tabs 500 can lose contact withthe neck 310 of the supply vial 300 and can release the supply vial 300.Once the plurality of flexible tabs 500 are in the receiving position,the user can then simply remove the supply vial 300 from the needle 510of the reservoir filling aid 100 breaking the fluid connection betweenthe supply vial 300 and the reservoir 20.

In another exemplary embodiment illustrated in FIGS. 6A-B, the supplyvial adapter end 110 of the reservoir filling aid 100 can have aninterior 650 and exterior 640. The interior 650 of the supply vialadapter end 110 can have a track 610 that follows a spiral path down theinterior 650 of the supply vial adapter end 110. In one exemplaryembodiment, the track 610 can be a recessed groove. The plurality offlexible tabs 500 can be connected together by a bottom ring 620. Thebottom ring 620 can have a track interface 620 protruding away from thebottom ring 630 towards the interior 650 of the supply vial adapter end110. In this exemplary embodiment, the track interface 620 can beinteract with, or be threaded into, the track 610 when the flexible tabs500 are in the receiving position. As the supply vial 300 is slidtowards the shaped ring 520, the supply vial 300 can also rotate thetrack interface 620 downwards along the path of the track 610. Therotation downwards of the supply vial 300 can flex the plurality offlexible tabs 500 inward towards and onto the neck 310 of the supplyvial 300 locking the supply vial 300 into place on the needle 510 andestablishing a fluid connection between the supply vial 300 and thereservoir 20. The track 610 and track interface 620, thereby, provideadditional support and security for the connection between the supplyvial 300, reservoir 20 and the reservoir filling aid 100.

Once the reservoir 20 is filled with the desired amount of medicalserum, the supply vial 300 can be rotated out of the supply vial adapterend 110 of the reservoir filling aid 100. As the supply vial 300 isbeing rotated out of the supply vial adapter end 110, the trackinterface 620 connected to the plurality of flexible tabs 500 travels upthe interior 650 of the supply vial adapter end 110 along the path oftrack 620. As the supply vial 300 is rotated out, the plurality offlexible tabs 500 can move from the closed position to the receivingposition and, thereby, the plurality of flexible tabs 500 can losecontact with the neck 310 of the supply vial 300 and can release thesupply vial 300. Once the plurality of flexible tabs 500 are in thereceiving position, the user can then simply remove the supply vial 300from the needle 510 of the reservoir filling aid 100 breaking the fluidconnection between the supply vial 300 and the reservoir 20.

In yet another exemplary embodiment, a removable adapter 730 for fittingonto the supply vial adapter end 110 of the reservoir filling aid 100 isillustrated in FIGS. 7A-B. This removable adapter 730 can be fittedsecurely onto a small supply vial 700 having a smaller circumferencethan a typical 10 ml supply vial 300 in order to increase the overallcircumference of the small supply vial 700 to that of a 10 ml supplyvial 300. In one exemplary embodiment, the small supply vial 700 can bea typical 3 ml supply vial. However, any other small supply vial 700 canbe used with the removable adapter 730 without departing from the spiritof the present disclosure. In one exemplary embodiment illustrated inFIG. 7A, the removable adapter 730 can securely snap into theindentations 720 of the neck 710 of the small supply vial 700. Inanother embodiment illustrated in FIG. 7B, the removable adapter 730 canbe slid onto the neck 710 of the small supply vial 700. However, anyother suitable methods of attachment known in the art are possible. Theremovable adapter 730 and the neck 710 of the small supply vial 700 canthen securely engage with the plurality of flexible tabs 500 of thesupply vial adapter end 110 of the reservoir filling aid 100 asdiscussed above. Thus, the removable adapter 700 can allow the fillingof the reservoir 20 by a small supply vial 700 of medical serum. In thisembodiment, the plurality of flexible tabs 500 would secure against thebody of the small supply vial 700 and the removable adapter 730. Theremovable adapter 730 can be comprised of a flexible material such as,for example, rubber, plastic or any suitable material known in the art.

After the reservoir 20 is filled, the small supply vial 700 candisengage from the reservoir filling aid 100 as described above and theremovable adapter 730 can be removed from the small supply vial 700 by,for example, simply unsnapping the removable adapter 730 from the smallsupply vial 700, or simply sliding the removable adapter 730 from thesmall supply vial 700 or by any other suitable method.

It is noted that terms like “preferably,” “commonly,” and “typically”are not utilized herein to limit the scope of the claimed embodiments orto imply that certain features are critical, essential, or evenimportant to the structure or function of the claimed embodiments.Rather, these terms are merely intended to highlight alternative oradditional features that may or may not be utilized in a particularembodiment of the present disclosure.

For the purposes of describing and defining the present disclosure, itis noted that the term “substantially” is utilized herein to representthe inherent degree of uncertainty that may be attributed to anyquantitative comparison, value, measurement, or other representation.The term “substantially” is also utilized herein to represent the degreeby which a quantitative representation may vary from a stated referencewithout resulting in a change in the basic function of the subjectmatter at issue.

Having described the present disclosure in detail and by reference tospecific embodiments thereof, it will be apparent that modifications andvariations are possible without departing from the scope of thedisclosure defined in the appended claims. More specifically, althoughsome aspects of the present disclosure are identified herein aspreferred or particularly advantageous, it is contemplated that thepresent disclosure is not necessarily limited to these preferred aspectsof the disclosure.

1. A reservoir filling aid for a reservoir of a medical infusion pump,the reservoir filling aid comprising: a main body for supporting thereservoir during the filling of the reservoir with a medical serum; anda supply vial adapter end positioned at a first end of the main bodyhaving an interior and exterior, the supply vial adapter end comprising,a plurality of flexible tabs extending from the supply vial adapter endfor interfacing with a supply vial containing the medical serum, and ashaped ring for housing the plurality of flexible tabs and the supplyvial while in a closed configuration, wherein when in the closedconfiguration a fluid connection is established between the supply vialand the reservoir.
 2. The reservoir filling aid of claim 1, furthercomprising a plunger body adjacent the main body for supporting aplunger attached to the reservoir during filling.
 3. The reservoirfilling aid of claim 1, wherein the supply vial adapter end furthercomprises a needle for piercing both the supply vial and the reservoir,wherein the needle passes the medical serum contained within the supplyvial into the reservoir to establish the fluid connection.
 4. Thereservoir filling aid of claim 3, wherein the needle is inaccessiblewhen the supply vial adapter end is in a receiving configuration.
 5. Thereservoir filling aid of claim 1, wherein each of the plurality offlexible tabs have a flange at its distal end.
 6. The reservoir fillingaid of claim 5, wherein the flange at its distal end protrudes towardsthe center of the reservoir filling aid.
 7. The reservoir filling aid ofclaim 5, wherein the flanges of each of the plurality of flexible tabsinterface with a neck indentation of the supply vial.
 8. The reservoirfilling aid of claim 1, wherein the plurality of flexible tabs iscomprised of rubber, plastic, or combination thereof.
 9. The reservoirfilling aid of claim 1, wherein the plurality of flexible tabs arepositioned equidistant from each other.
 10. The reservoir filling aid ofclaim 1, wherein the plurality of flexible tabs extend from the supplyvial adapter end at angle.
 11. The reservoir filling aid of claim 1,wherein the plurality of flexible tabs is comprised of three flexibletabs.
 12. The reservoir filling aid of claim 1, wherein the plurality offlexible tabs has a circumference greater than the circumference of thesupply vial adapter end while in a receiving configuration.
 13. Thereservoir filling aid of claim 1, wherein the medical serum is insulin.14. The reservoir filling aid of claim 1, further comprising an adapterthat fits on top of small supply vial, wherein the adapter fits withinthe plurality of flexible tabs of the supply vial adapter end of thereservoir filling aid.
 15. The reservoir filling aid of claim 1, furthercomprising, a track that spirals down the interior of the supply vialadapter end; and a bottom ring connecting the plurality of flexibletabs, wherein the bottom ring comprises a track interface that interactswith and travels along the spiral track.
 16. A reservoir filling aid fora reservoir of a medical infusion pump, the reservoir filling aidcomprising: a main body for supporting the reservoir during the fillingof the reservoir with a medical serum; and a supply vial adapter endpositioned at a first end of the main body and having an interior and anexterior, the supply vial adapter end comprising, a track that spiralsdown the interior of the supply vial adapter end, a plurality offlexible tabs extending from the supply vial adapter end for interfacingwith a supply vial containing the medical serum, wherein the pluralityof flexible tabs are connected together by a bottom ring, the bottomring having a track interface that interacts with and travels along thetrack, and a shaped ring for housing the plurality of flexible tabs andthe supply vial while in a closed configuration to establish a fluidconnection between the supply vial and the reservoir.
 17. A method forfilling a reservoir of a medical infusion pump using a reservoir fillingaid, the method comprising: positioning a reservoir of a medical pump ina main body of the reservoir filling aid; engaging a supply vialcontaining a medical serum with an supply vial adapter end of thereservoir filling aid, wherein the supply vial is engaged with thesupply vial adapter end by a plurality of flexible tabs extending fromthe supply vial adapter end that connect with a neck indentation of thesupply vial; and sliding the engaged supply vial into a shaped ring ofthe supply vial adapter end.
 18. The method of claim 17, furthercomprising, guiding a plunger attached to the reservoir along a plungerbody of the reservoir filling aid.
 19. The method of claim 17, furthercomprising, traveling a track interface affixed to the plurality offlexible tabs along a spiral track located within the supply vialadapter end.
 20. The method of claim 17, wherein sliding the supply vialinto shaped ring pierces the supply vial with a needle housed within thesupply vial adapter end to establish fluid connection between the supplyvial and the reservoir.